); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] John Miles wrote: > ); SAEximRunCond expanded to false > Errors-To: [EMAIL PROTECTED] > >> I have made >> numerous shielded opens for network analyzer use by crimping an >> SMA connector >> nut onto a piece of copper semi-rigid shield tube without using any center >> insulator, or center pin. >> > > You can (supposedly) mess up an expensive 3.5mm female connector if you mate > it with a male SMA without a fixed center pin. Never done this myself but > have read about it. I have a bad habit of using the 3.5mm-APC7 adapters > from my cal kit for making general SMA connections to the 85046A test set, > and I always wonder if I'm going to mess them up.
Unfortunately, the damage isn't terribly visible. I make it a general policy not to mate APC-3.5 with SMA, but I do the same thing with my APC-3.5 to APC7 adapters. I haven't yet found the appropriate SMA to APC7. I am looking to score a couple of APC7 to N Female adapters for a reasonable price, and then I will sin no more. One thing to be very careful with the APC7 is to not allow the two connectors to rotate relative to each other. That causes the gold mating shield contact to peen its gold into a little burr that extends into the air space between the shield and the center conductor. It also loses the gold on the shield contact. -Chuck Harris _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
